Addition and Subtraction of Congruence's

Application of Addition- Example-1

Multiplication in Congruence's

Application of Multiplication- Example-2/3

There are 44 boxes of chocolates with 113 chocolates in each box. If you sell the chocolates by dozens, how many will be leftover?

Exponentiation in Congruence's

Application of Exponentiation Example – 4/5

Find the last digit of .

Find the r

Division of Congruence's: Never Divide, Think from Basics

– Divide by 2

( 5 and 2 are coprime) - Divide by 2

Combining Congruence's

Example - 6

3 professors begin courses of lectures on Monday, Tuesday, Wednesday and announce their intentions of lecturing at intervals of 2, 3, 4 days respectively. If there are no lectures on Saturday, after how many days will all professors omit a lecture together?